(n) a person who takes a college class 

after he or she has already graduated

(adj) occurring or continuing after death; 

usually related to a book that is published after the author 

has died

(n) the time in society that came after

the Industrial  Revolution

(n) a mark printed across a stamp after it is

 received by the post office

(adj)  taking place after noon; p.m.

(adj)  occurring or done after death; 

usually related to an examination of the body after it is dead

(v)  to do something at a time or date after it 

was originally planned

(n)  the editing that is done after the 

movie, film, or video has been taped

(n) a comment, note, or thought written after

the letter is finished; p.s.